heikel



2 Sheets-Sheet 1.

O. HEIKEL. Magneto Electric Machine.

No. 235,433, Patented Dec. 14,1880.

2 Sheets- Sheet 2.

O. HEIKE-L. Magneto Elect-ric Machine.

40.235,433.' Patentedpec. 14,1880.

N' s, v

` UNITED STATES PATENT @Erica OTTO HEIKEL, OF JERSEY CITY, NEY JERSEY, ASSIGNOR TO THE NATIONAL ELECTRIC LIGHT AND POVER COMPANY, OF NEV YORK, N. Y.

MAGNETO-ELECTRIC MACHlNE.

SPECIFICATION forming part of Letters Patent No. 235,433, dated December 141, 1880.

Application filed May 12, 1879.

To alt whom it may concern:

Be it known that I, OT'ro HEIKEL, ot' Jersey City, in the State of New Jersey, have invented an Improvement in Magneto-Electric Machines, of which the following is a specification.

Magneto-electric machines have been made with the core ot' the field-efforce magnets broadest in the direction of the rotation ofthe ro armature-cores, as shown in my Patent No.

Iumagneto-electric machines where one core is near another the magnetism of one core often acts in opposition to the magnetism of the next core and lessens the same, or tends to counteract or lessen the current or the secondary current flowing` through the helices.

'The object of this invention is to obtain great compactness and energy in the magnets 2o and to cause one magnet to aid the next, and the inductive et't'ect on one part ot' the helix to promote the current set up in all the circuit or metallic extensions from that helix.

In the drawings, Figure 1 is a side view ot` the machine. Fig. 2 is a crosssection ot' the same. Fig. 3 is a diagram illustrating the manner in which the helices are wound in the eld-of-force magnets. Fig. 4 illustrates the manner of winding the armature-helices and 3o the connections to the commutatorplates. Fig. 5 is an end view, illustrating theimprovement as applied to a machine in which the number of magnets has been increased. Fig. 6 is a transverse section of a modification in the machine. Fig. 7 shows the commutators therefor, and Fig. 8 is a diagram illustrative ot' the connections in the machine.

The field-of-force magnets are composed of the cores c a upon the basebars b b. There 4o may be two ranges of these, as shown in Figs. l and 2, or there may be four or more ranges, as shown in Figs. 5 and 6.

Each core is a flat bar, considerably wider than it is thick, and the edges are rounded to facilitate the winding of the helices. This form of core allows them to be placed side by side and close together, so that there will only be the room necessary for the helices. The cores can be wound and then screwed upon the base-bars b, or the helices can be 5o wound upon the cores, whether separate or made in one with the respective base-bars.

The helices are wound so that the current between two cores goes in one direction and between the next two cores in the other direc- 5 tion. Hence one core will be north, the other south, and the action and reaction will tendto intensify the magnetic et't'ect, and there will be no tendency for one currentto lessen or neutralize another. This mode of winding is illus trated in Fig. 3, where the arrows denote the direction of the current in the helices. Although the helices are continuous or connected throughout any range ot' ield-of-force magnets, still the currents between S N pass in one direction and between N S in the other direction, and this is the caseregardless ofthe number otl coils in each helixthat maybe made before passing to the next helix or connecting with the next helix; hence the iield-otforce magnets become very powerful, and one helix can be pressed tightly against the next without any injurious inductive eii'ect, and the helices and cores can be packed together iiatwise to whatever extent is necessary for the required capacity ot" the machine.

The ends of the cores are arcs of circles, as shown ati; butthey are not arcs from the center of the revolving shaft c, but they are arcs ot' a larger circle than that described by the revolving armature-cores. The object ot' this is to obtain a continuous current free from pulsations. The angles of the cores ot the iield-of-force magnets are farther from the path of the armature-cores than they are in 8 the central portions ot' the cores; hence the induced current will not be suddenly pulsated, but there will'be a gradual rise and fall of current in the armature-helix as it enters and leaves the magnetic field. o

The armature-cores and armature-helices are made in the same manner as the eld-otforce magnets. Each armature-core c is narrow in the direction ot" the length ofthe shaft c and ,broad in the direction of revolution. The positions ofthe armature-cores correspond to the cores of the tield-of-force magnets in planes at right angles to the axis ot' revolution; but the ranges of armaturecores are preferably inclined so that the core at one end of a range of armatures reaches the culminating point in relation to the eld-of-force magnets at about the same time as the armaturecore at the other end of the next range of armature cores. This effectually prevents pulsations in the current; but it is to bc understood that in magneto-electric machines, when pulsations are desired, the ranges of armature-cores will be parallel to the axis of rotation, and that my mode of arranging the cores and helices side by side, iiatwise, is available in such machines.

The helices of the armaturecores are Wound in a similar manner to the helices of the fieldof-force magnets, so that the induced current set up in the helices will not be lessened by counter-induction, and the polarityT of the cores will be promoted by reaction With the adjoining cores; hence the greatest inductive effect Will be obtained in the helices.

All the helices are in metallic connection one with the other. The direction of the Winding of the Wires is indicated in Fig. 4, and the end helix on one range is connected, by the Wire 6, to the iirst helix on the next range.

I also make a metallic connection from one commutator-plate /L to the Wire that passes from one helix to the next, and by preference I employ as many commutator-plates h as there are helices, and I take off the current by the springs or brushes 7c l at the place to which the positive and negative currents flow, respectively, and such currents will be continuous, the spring resting upon one commutator-plate before leaving the next.

Where there are four ranges of iield-otforce magnets, asin Fig. 5, there should be four commutator-springs. These can bc connected in pairs, or one current led through the iield-of force magnets and the other taken to an electric light or other apparatus and brought back to the negative; or all the current may pass through the field-magnets before orafter being otherwise used.

Figs. (i, 7, and 8 illustrate the aforesaid improvement with eight stationary ranges and four revolving ranges, and the diagram Fig. S illustrates the circuit-connections when the revolving magnets are employed as the iield-of force magnets and theinduced current is taken from the stationary ranges of magnets. In this instance the alternate currents set up in the circular range of stationary armature-magnets e Will be changed into currents, in one direction, by passing through the commutatorsprings k Z and plates h to the helices of the revolving field-of-force magnets a', and from those helices the current may pass to any electric appliance and back to the frame of the machine, and thence to the armature-helices e; or a portion of the armature-helices and com mutators may be used with the revolving eldof-force magnets, and another portion with electric lights or other appliances.

I have shown the pairs of helices of the armature-cores e connected at one end with the frame b', tbe other ends by Wires to commutator-sprin gs 7c I. The four insulated commutator-plates It are connected, alternately, to the insulated half-rings to t', the brushes of which connect by wires l0 With shaft c, and by Wire 1l with brush and insulated ring x. The helices of the tieldbf-force magnets a are connected at one end to the shaft c and at the other end to the insulated ring m, so that the current passing from the plates U by l1, through x and helices of a, returns, through shaft c and frame b', to the helices c', or else through the Wire l0, plates 'L0 and 7L, to the helices e', in which the opposite currentis set up. These connections may include in any part electric lights or other electric appliances or the currents may be led in any usual or desired direction, as Well known in magneto-electric machines.

I do not claim, in a dynamo-electric machine, the pole-faces of the iield-of-t'orce magnets described on arcs ot' circles greater than the circles described by rotating their armature, and whose radii spring from centers removed from the centers of the axis ofthe armatures.

I clainras my invention- 1. ln a magneto-electric machine, the iiat cores wound with helices, in the manner specified, and set together atwise, substantially as and for the purposes set forth.

2.,In a magneto-electric machine, the stationary cores placed radially around the'revolving cores, such cores being dat and longer in the direction of the revolution than in the direction of the axis, and the ends otl the stationary cores arcs of circles ot' greater diameter than the circle described by the revolving cores, for the purposes set forth.

Signed by me this 6th day of May, A. D. 1879.

OTTO HEIKEL.

Witnesses Gno. T. PINCKNEY, W'ILLIAM G. Morr.

TOO

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